http://archive.freep.com/VideoNetwork/2273614238001/US-Vows-to-Defend-South-Amid-North-Korea-Threatshttp://cdn.newslook.com/ef/efabcfffef9a2921af8f0ab49d2e635e/mp4_low/efabcfffef9a2921af8f0ab49d2e635e-mp4_low.mp4http://archive.freep.com/VideoNetwork/2273614238001/US-Vows-to-Defend-South-Amid-North-Korea-Threatshttp://cdn.newslook.com/ef/efabcfffef9a2921af8f0ab49d2e635e/images/frame_0014.jpgUS Vows to Defend South Amid North Korea ThreatsThe United States will defend itself and its 'treaty ally' South Korea amid increasingly bellicose threats from the North, US Secretary of State John Kerry vowed Tuesday.243Yun Byung Senorth koreanewslookUnited States of AmericausWorldkim jong-unJohn KerrySouth Korea00:57